10586-73-9Relevant academic research and scientific papers
Reactions of diorganotin(iv) oxides with isatin 3- And 2-thiosemicarbazones and with isatin 2,3-bis(thiosemicarbazone): Influence of diphenyldithiophosphinic acid (isatin = 1H-indole-2,3-dione)
Casas, Jose S.,Castineiras, Alfonso,Rodriguez-Argiielles, Maria C.,Sanchez, Agustin,Sordo, Jose,Vazquez-Lopez, Antonia,Vazquez-Lopez, Ezequiel M.
, p. 4056 - 4063 (2000)
Reaction between SnMe2O and isatin 3-thiosemicarbazone (HL1) in the presence of diphenyldithiophosphinic acid (HS2PPh2) afforded [SnMe2(S2PPh2)2] and [SnMe2LI{O(S)PPh2}]·EtOH, which were studied by X-ray diffraction and IR spectroscopy in the solid state and by multinuclear ('H, "C, 31P and "9Sn) NMR spectroscopy in CDC13 or dmso-d6 solution (isatin = lH-indole-2,3-dione). In the bis(dithiophosphinate) derivative the tin atom is bound to two strongly anisobidentate ligands both in the solid state and in solution in chloroform. In the mixed-ligand complex the monothiophosphinate ligand is O-co-ordinated and the thiosemicarbazone (TSC) is bound primarily through its sulfur atom and the nitrogen atom of the azomethine group, although there is an additional weak bond with the remaining isatin oxygen atom [O(l)]. The NMR spectrum in dmso-d6 suggests weakening of the Sn-S bond and reinforcement of theSn-O(l) bond. For comparison, the structure of HL1 was also studied by X-ray diffraction. Reaction of SnMe2O with isatin 2,3-bis(thiosemicarbazone) (H2LL) afforded [SnMe2(LL)]. X-Ray diffraction shows that one TSC chain is bound to the metal through the sulfur atom and the azomethine nitrogen atom, forming a five-membered metallacycle. The other chain co-ordinates through the nitrogen of the hydrazine group following its deprotonation. The co-ordination sphere changes in dmso-d6 solution, in which a molecule of solvent probably occupies a co-ordination position to make the co-ordination number of the metal center up to six. The spectra of the other [SnR2(LL)] complexes prepared (R = Et or Bu) suggest that both have structures similar to that of the methyl derivative. Reaction of SnMe2O with isatin 2-thiosemicarbazone (H2LII) gave [SnMe2LII], the NMR spectra of which indicate a five-co-ordinated tin atom and an O,N,S-tridentate TSC ligand. The Royal Society of Chemistry 2000.
Di- and tri-organotin(IV)diphenyldithiophosphinates
Silvestru, Cristian,Ilies, Florin,Haiduc, Ionel,Gielen, Marcel,Zuckermann, J. J.
, p. 315 - 324 (2007/10/02)
Di- and tri-organotin(IV) diphenyldithiophosphinates, R2Sn(S2PPh2)2 (R = Me, n-Bu, Bz, Ph) and R3SnS2PPh2 (R = Me, Cy, Bz, Ph) were prepared by reaction of the corresponding organotin chlorides or oxides with diphenyldithiophosphinic acid or its ammonium
